Metal pole structure



' Nov. 21, 1933.

w. F. scHULz 1,936,272

METAL POLE STRUCTURE Filed Dec. 31, 1930 3 Sheets-Sheet l INVENTOR.

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N0V 21, 1933- w. F. SCHULZ METAL POLE STRUCTURE Filed Dec. 3l, 1950 3 Sheets-Sheet 3 I'ESchulz,

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Patented Nov. 21, 1933 PATENT 'Fries METAL POLE STRUCTURE Walter F. Schulz, Youngstown, Ohio,

Truscon Steel Company,'Youngstown,

assignor to Ohio, a

corporation of Michigan Application December 31, 1930 Serial No. 505,889

9 claims.

kncckdown condition, being so constructed that it can be readily assembled in the field. The

structure moreover is such that the parts .can be packed in close assembly and as a consequence a much greater amount of material can be loaded and transported within a restricted compass than is possible where the towers arebuilt before shipping. The result is not only a great saving in transportation charges, but it makes it possible to morey conveniently and practicably deliver the articles to isolated and inaccessible places where assernbly'and erection can be made.

In the accompanying drawings: Y

Figure 1 is a side elevation of atower structure for power lines vembodying the present invention.

Figure 2 is a top plan view of the same.

Figure 3 is a detail crossy sectional view on an enlarged scale and on the line 3-3 of Figure l.

Figure 4 is a detail vertical sectional view on the line 4-4 of Figure 3. v .Figure 5 is a detail side elevation of one of the pole members on an enlarged scale and at the encircling reenforcement.

Figure 6 is a detail sectional view on an enlarged scale and on the line 6 6 of Figure 1.

Figure 7 is a detail sectional view on the line 7-7 of Figure 4;

Figure 8 is a detail sectional View similar to Figure '7, but showing a slightly modified form of construction. Y

While it will be understood that the structure may take various forms and be either a single pole or tower, a complete assembly for relatively heavy power lines is illustrated in Figures 1 and 2. As there shown, two poles 9 are employed that support a cross arm designated by the reference numeral 10. As the pole structures are similar, a description of one will obviously suffice for both.

The pole consists in the present instance of four'separate units, though a less or greater number may be employed, depending on the cross sec- (Cl. 18S-25) tional form desired. Each of these units is'designated by the reference numeral 11. Each unit consists of longitudinal side bars 12 preferably made ofdeformed plate metal, consisting of vangularly disposed side flanges or walls 13 that are set at an obtuse angle. One of the anges of each side bar is provided with a'longitudinal inset bead 14. A web connects the Vside bars 12 of each unit and is preferably formed of a rod 15 bent to zigzag form, the bends 16 of this rod or web lying against the ribs 14 of the two side bars and being electrically welded thereto. The consequence is that a unit is provided which is very strong, but is substantially flat, the free flanges only being offset and thesein divergent relation.

In assembled relation and in the embodiment disclosed, fourl units are employed, as will be clear particularly by reference to Figure 3, these units having the free flanges 13 of their side bars l2 arranged .in'overlapping relation. They are secured together as shown in Figures 4 and '7 at intervals by bolts 17 or other suitable fasteners. At certain points these fasteners may take the form of crossedbrace'rods 18 (see Figure 3), the terminals of whichY pass through the overlapped flanges l13 and are secured by suitable nuts 1.9.

These poles may furthermore be braced as shown in detail in Figures 5 and 6. That is to say corner plates 20 in the form of angle brackets are placed around the outer sides of the over.- lapped and secured anges and are connected by angle bars 21; r'Connecting adjacent angle bars and extending on'the 'inner sides of certain of the associated side bars 12 are crossed braces 22 and these crossed braces in turn are connected by diagonal angle bars 23 forming ties. This produces not only a hoop pole, but an internal brace for said pole.

It will be evident that with this Vstructure the units may be fabricated at a manufacturing plant and practically nested in piles or bundles, inas-r much as one will lie within the other so that four of these units, for example, when lying flat, will not occupy nearlythe amount of space that an assembled pole will occupy. The units however being complete in themselves, can be readily assembled vby unskilled labor inasmuch as they need only to be placed in properly associated relation and the bolts or fasteners applied.

When a lset of .these poles or towers is employed for carrying a cross arm, the structure is preferably that of Figures land 2. The poles or towers 9 are suitably assembled and their lower ends embedded in the earth, as shown. The

like binder around the These portions at their widest point embrace the y ping the v'side bars of upper ends of the poles or towers 9 and are fastened as shown at 23 in Figure 1 to the side bars of the units. Braces 29 may be interposed between the oppositely bowed portions of the two beams and where the beams most nearly approach each other, hanger brackets 30 are interposed between and secured to them. These hanger brackets, as will be readily understood,v

support the cables that are to be carried by the structure.

From the foregoing, it is thought that the construction, operation and many advantages of the erein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages oi the invention. Y

ForeXample, the particular angular relation of the flanges .1.3 of the side bars may be varied. Thus in Figure 8 angle bars 12a are shown having their flanges 130, of each d posed at right angles to each other. Each free riange howeve; overlaps a flange of the associated unit and the parts are secured together by bolts as 17a. It willv be understood that the webs here designated 15a are the saine as those already described and are connected to the side bars l2@V in the same manner.

What I claim, is:

l. A skeleton tower or pole structure for coinmercial purposes comprising separate units, each consisting of longitudinal side bars of angle nietal, and a web of substantially zigzag form alternately secured to a certain flange only of each of the side bars, the other free flanges extending to the inner side of the unit, said unitswhen assembled having the other and' inset free flanges of certain of their side bars overlapping the side bars of the other units and secured thereto.

2. l skeleton tower or pole structure for con mercial purposes comprising separate units, each consisting of longitudinal side'bars of angle inetal, and a web of substantially zigzag forni heing its bends alternately welded to a cer n flange only oi each of the side bars, the other free lianges extending to the inner side of the unit, said units when assembled having the other and free flanges of deir side bars extending toward the other url s and overlapother units and secured thereto.

3. A'slreleton tower or pcie structure for coinmercial purposes comprising separate units, each consisting of longitudinal bars of angle metal, certain of the flanges thereof being longitudinally ribbed, a web comprising a rod of zigzag formation having its bends welded to the ribs of said ianges and lying alongside said anges,l said units when assembled having associated side bars with inset free flanges, the inset free flange oi one bar longitudinally lapping the other bar, and fasteners securing said bars together.

4. A skeleton tower or pole structure comprising separate units, each consisting of longitudinal bars of angle metal having outer and inner ianges disposed at an obtuse angle in cross section, a web comprising a rod of zigzag formation having its bends welded respectively to the outer only of the ribs of said flanges leaving the other inset flanges free, said units when assembled having associated side bars, the free inset flange of one bar overlying the other bar, and fasteners securing said bars together.

5. A skeleton tower or pole structure for commercialpurposes comprising separate units, each consisting Yof longitudinal bars of angle metal having Vouter and inner ilanges disposed at an obtuse angle in crosssection, the outer of the same having alongitudinal rib, a web comprising a zigzag rod having its bends laid against and welded to the ribs of said iianges of the side bars, leaving the other inset side flanges free, said ts when assembled having certain of the side bars associated with their free flanges overlapped, and fasteners securing said overlapped flanges together.

6. A tubular tower or pole structure comprisseparate units, each consisting of longitudial sidebars and an open web connecting the the adjacent side bars of associated units eing overlapped, and cross braces within the t ieture connected to the overlapped portions f the side bars. f Y

7. d i ula-r tower orl pole structure comprising separate units, each consisting oi longitudinal side bars and an open web connecting the Vthe adjacent side bars of associated units being secured together, a hoop surrounding the structure outside the associated units, braces connecting, different portions 0iV the hoop and eX- tending across the space within the structure and ties connecting the opposite braces and extending across the space within the tower or pole structure. Y

8. A structural unit for towers or poles for commercial purposes comprising spaced side bars of deformed plate metal having inner and outer angularly disposed ilanges, and a web of Vsubstantially zigzag form bridging the space between the side bars and having its opposite sets of bends respectively lying alongside and welded tothe sides of the outer flanges only, theV inner flanges being free of the said webs and extending toward and adapted to overlie and be secured to the corresponding free iianges of other units.

e. A tubular tower or pole structure comprisine separate s, Vconsisting of spaced side bars and a slreleton web connecting the same, portions of the side bars being overlapped, and cross tie rods extending diagonally across the space within the tower or pole structure and having their terminal portions passing through and securing together the overlapped portions of the opposite units. 

